ORLANDO — The racing world has gathered here to do business for the 2013 season.

The Performance Racing Industry trade show is using up 99 percent of the Orange County Convention Center space as vendors and buyers gather to firm up orders for the next racing season, which starts down the road at Daytona International Speedway in about two months.

Everything racing is on display at this working exhibit of hardware and technology. There are literally miles of aisles of merchandise and jaw-dropping displays.

There are engine parts. There are chassis parts. There are all manner of safety equipment, from seats to fire suits to helmets. And everyone seems to be in a hurry.

The show opened Thursday and runs through Saturday, but don’t try to get in unless you are heavily credentialed. This is closed to the general public and has traffic clogged up and down International Boulevard.

This is the last hurrah for the PRI show here. Next year it moves to Indianapolis where it was born 25 years ago.

I’ll keep you posted Friday with a live blog, but until then, here are some of the exhibits and cars that caught my eye Thursday.